Began changes to allow access to raw object hash using subscript notation
Working with the default set of model-level properties on various classes
Renamed softlayer_resource to sofltayer_dynamic_attr.  This makes it lie very nicely aside softlayer_attr.  Added more attributes to the existing classes and 'played with' documentation to see how we could document those beasts.
Updated the object mask for the new filterMask root property type.  Fixed a bug which prevented objects from updating properly
Modified unit tests to adapt to changes in RSpec
resolves #20